Robert Durst

It did not disappoint.

in the jinx bobby denies that he wrote the note but he says whoever sent that note is the murderer well andrew jarecki says to him what about this they put up the two envelopes which were so startlingly alike the block lettering was the same the telltale misspelling of beverly was also the same and bob looked a little bit stunned and flustered

and they asked him to identify which was which.

Can you tell me which one of these you wrote, or which one you didn't write?

No.

This was the dilemma.

They had discovered a new piece of evidence, and it was remarkable.

It wasn't the whole case, but it was a remarkable piece of evidence.

So where does the line between their obligation as a journalist end and their obligations as a good citizen begin?

We decided that we would give it to law enforcement at some point.

When we left Mark Smerling and Andrew Jarecki after first seeing the footage of some of the things that Bob had said, after seeing the cadaver note, John and I absolutely knew Robert Durst is good for this murder.

For the next two years, LAPD is keeping a watchful eye, tracking his cell phone.

Now, the prosecutors, meanwhile, are building their case.

Andrew Jarecki and Mark Smerling are wading through hours and hours and hours of footage.

And then they make another remarkable discovery.

We had done the last interview with Bob.

The process is that when we're doing the interview, there's multiple mics, multiple cameras.

There's a mic overhead.

Bob's got a radio mic, which is a wireless mic pinned to him.

Bob goes into the bathroom, comes out of the bathroom.